// Problem: 
// Contest: 
// URL: 
// Memory Limit: 
// Time Limit: 
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int read(){
	int s=0,w=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
	while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
	return s*w;
}
signed main()
{
	int t=1;
//	cin>>t;
	while(t--)
	{
		int n,ans=0,sum=0;
		cin>>n;
		vector<int> w(n+1);
		vector<vector<int>> v(n+1,vector<int>(1e5+1));
		for(int i=1;i<=n;i++)
		{
			cin>>w[i];
			sum+=w[i];
			//v[w[i]]=1;
		}
		for(int i=1;i<=n;i++)
		{
			for(int j=1;j<=sum;j++)
			{
				v[i][j]=v[i-1][j]||v[i-1][j+w[i]]||v[i-1][abs(j-w[i])];
				if(j==w[i])v[i][j]=1;
			}
		}
		for(int i=1;i<=sum;i++)
		{
			if(v[n][i])ans++;
		}
		cout<<ans;
	}
	return 0;
}
